Chisanbop is a fun and effective math program for learners who struggle with memorizing math facts. Chisanbop is a Korean method of finger calculation based on the abacus. Students quickly learn Chisanbop and are able to apply it anytime, anywhere. For students who have a history of struggling with basic math facts, learning Chisanbop presents an excellent alternative. Has een used for the blind also. Never has been counting on your fingers been so much fun or so interesting!